In order to rapidly attenuate the vibration of the frame and body and improve the ride comfort and comfort of the vehicle, the vehicle suspension system is generally equipped with shock absorbers, and the two-way acting cylindrical shock absorbers are widely used in the vehicle. Shock absorber is a vulnerable part in the process of automobile use. The working quality of shock absorber will directly affect the stability of automobile driving and the service life of other parts. Therefore, the shock absorber should always be in good working condition.
In the automobile suspension, the shock absorber is always used together with the spring. When we press down a corner of the body, the spring is actually compressed and the corresponding swing arm swings at the same time. After the car is released, the car body will rebound under the spring force. At this time, the shock absorber dampens the rebound of the spring, that is, it tends to be stable after rebound.